EP1102300A3 - Color cathode-ray tube - Google Patents

Color cathode-ray tube Download PDF

Info

Publication number
EP1102300A3
EP1102300A3 EP00124335A EP00124335A EP1102300A3 EP 1102300 A3 EP1102300 A3 EP 1102300A3 EP 00124335 A EP00124335 A EP 00124335A EP 00124335 A EP00124335 A EP 00124335A EP 1102300 A3 EP1102300 A3 EP 1102300A3
Authority
EP
European Patent Office
Prior art keywords
ray tube
color cathode
supporters
strip plate
plate material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00124335A
Other languages
German (de)
French (fr)
Other versions
EP1102300A2 (en
Inventor
Hideharu Ohmae
Susumu Okuji
Makoto Okuji
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of EP1102300A2 publication Critical patent/EP1102300A2/en
Publication of EP1102300A3 publication Critical patent/EP1102300A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/005—Processes combined with methods covered by groups B21D1/00 - B21D31/00 characterized by the material of the blank or the workpiece
    • B21D35/006—Blanks having varying thickness, e.g. tailored blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
    • B21D5/08—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/06—Screens for shielding; Masks interposed in the electron stream
    • H01J29/07—Shadow masks for colour television tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/14—Manufacture of electrodes or electrode systems of non-emitting electrodes
    • H01J9/142—Manufacture of electrodes or electrode systems of non-emitting electrodes of shadow-masks for colour television tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/07—Shadow masks
    • H01J2229/0722—Frame

Abstract

In a color cathode-ray tube with a shadow mask stretched and held by supporters while being provided with a tensile force, a member with a substantially L-shaped cross-section is used for each of the supporters, which is obtained by forming of a strip plate material having a middle part and thinner thickness-deviation portions on both sides of the middle part by rolling of a metal material; and then bending and deforming of the strip plate material in its width direction by roll forming to form a bent and deformed portion in the middle part. The supporter obtained by such a method can be reduced in weight while maintaining substantially the same strength as that of a conventional product, can be processed economically in relatively simple steps, and has less thickness variation. Therefore, an inexpensive color cathode-ray tube having stable qualities and causing less color unevenness can be provided.
EP00124335A 1999-11-19 2000-11-16 Color cathode-ray tube Withdrawn EP1102300A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP32944099 1999-11-19
JP32944099 1999-11-19

Publications (2)

Publication Number Publication Date
EP1102300A2 EP1102300A2 (en) 2001-05-23
EP1102300A3 true EP1102300A3 (en) 2007-05-16

Family

ID=18221405

Family Applications (2)

Application Number Title Priority Date Filing Date
EP00124335A Withdrawn EP1102300A3 (en) 1999-11-19 2000-11-16 Color cathode-ray tube
EP00124354A Expired - Lifetime EP1101546B1 (en) 1999-11-19 2000-11-17 Method of processing bent and deformed portion of metal material

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP00124354A Expired - Lifetime EP1101546B1 (en) 1999-11-19 2000-11-17 Method of processing bent and deformed portion of metal material

Country Status (8)

Country Link
US (2) US6705145B1 (en)
EP (2) EP1102300A3 (en)
JP (2) JP2001205346A (en)
KR (2) KR100396059B1 (en)
CN (2) CN1113710C (en)
DE (1) DE60023820T2 (en)
MX (1) MXPA00011373A (en)
MY (1) MY125780A (en)

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KR20030045258A (en) * 2001-12-01 2003-06-11 삼성에스디아이 주식회사 Tension mask assembly and cathode ray tube applying the same
DE102007051354B4 (en) 2007-10-26 2009-11-19 Welser Profile Ag Method for producing a profile from flat metal strip
JP4909248B2 (en) * 2007-12-01 2012-04-04 株式会社ヨシカワ Long-part manufacturing method for automobile and long-part manufacturing apparatus for automobile
DE102008051894A1 (en) * 2008-10-16 2010-05-06 Behr Gmbh & Co. Kg Metal load-adapted structural part for a heat exchanger, method for producing a load-adapted structural part, heat exchangers
CN103182403A (en) * 2011-12-31 2013-07-03 上海和达汽车配件有限公司 Laser welding method on basis of manufacturing pipes by high-strength different-thickness plates
JP6146480B2 (en) * 2013-11-28 2017-06-14 新日鐵住金株式会社 Steel plate material manufacturing method and manufacturing apparatus
CN104289590B (en) * 2014-09-05 2016-03-09 武汉理工大学 A kind of bending combined forming process of essence punching processing L shape bool
SG11201703007SA (en) * 2014-10-13 2017-05-30 Dynamic Metals Llc Process of forming and a seal for an engine
JP6407659B2 (en) * 2014-10-24 2018-10-17 三菱日立パワーシステムズ株式会社 Seal strip processing method and seal strip processing apparatus
DE102016200520B4 (en) * 2015-03-19 2019-10-31 Ford Global Technologies, Llc Method for producing a structural component and rolling device
DE102015118099A1 (en) * 2015-10-23 2017-04-27 Benteler Automobiltechnik Gmbh Method for producing a motor vehicle component
JP6629891B2 (en) * 2018-01-17 2020-01-15 株式会社Ｓｕｂａｒｕ Press forming device and outer panel
CN109226353A (en) * 2018-10-30 2019-01-18 山西创奇实业有限公司 A kind of angle steel molding machine and its application method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02177229A (en) * 1988-12-28 1990-07-10 Nec Corp Manufacture of flat shadow mask body
JPH04368756A (en) * 1991-06-17 1992-12-21 Mitsubishi Electric Corp Expansion type color selecting electrode body structure
JPH0745211A (en) * 1993-07-30 1995-02-14 Sony Corp Picture tube
EP0645795A2 (en) * 1993-09-27 1995-03-29 Sony Corporation Color selecting electrode mounting frame for CRT and process for production of same
EP0788133A1 (en) * 1994-10-28 1997-08-06 Matsushita Electronics Corporation Color cathode ray tube apparatus
JPH11288672A (en) * 1998-02-06 1999-10-19 Matsushita Electron Corp Color picture tube

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BE422326A (en) * 1937-01-26
US3209432A (en) * 1963-12-23 1965-10-05 Ford Motor Co Method for fabricating a structural member
US3877275A (en) * 1973-08-22 1975-04-15 Unistrut Corp Cold roll reduction and forming method
DE2813636C3 (en) * 1978-03-30 1980-10-30 Theodor Wuppermann Gmbh, 5090 Leverkusen Process and device for the production of profiles made of metal, primarily steel profiles
US4279139A (en) * 1979-07-02 1981-07-21 Arbed Acieries Reunies De Burbach-Eich-Dudelange, Societe Anonyme Method of rolling angle structural shapes
JPS5919764B2 (en) * 1979-12-12 1984-05-08 住友金属工業株式会社 Manufacturing method of square steel
JPS5930428A (en) * 1982-08-12 1984-02-18 Hitachi Ltd Bending method of thick plate into v shape
JPS59109466A (en) 1982-12-16 1984-06-25 Nissan Motor Co Ltd Member for car
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JPH0753282B2 (en) * 1985-12-27 1995-06-07 愛知製鋼株式会社 Channel steel manufacturing method
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KR200143744Y1 (en) * 1995-12-21 1999-06-15 손욱 Shadow mask and mask frame of crt
US5890388A (en) * 1997-07-30 1999-04-06 Centre Bridge Investments Method and apparatus for forming structural members
JPH11123458A (en) * 1997-10-27 1999-05-11 Meiji Natl Ind Co Ltd Structure for bending metallic sheet
JP3995323B2 (en) 1997-11-20 2007-10-24 株式会社中田製作所 Pipe roll preforming method
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Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02177229A (en) * 1988-12-28 1990-07-10 Nec Corp Manufacture of flat shadow mask body
JPH04368756A (en) * 1991-06-17 1992-12-21 Mitsubishi Electric Corp Expansion type color selecting electrode body structure
JPH0745211A (en) * 1993-07-30 1995-02-14 Sony Corp Picture tube
EP0645795A2 (en) * 1993-09-27 1995-03-29 Sony Corporation Color selecting electrode mounting frame for CRT and process for production of same
EP0788133A1 (en) * 1994-10-28 1997-08-06 Matsushita Electronics Corporation Color cathode ray tube apparatus
JPH11288672A (en) * 1998-02-06 1999-10-19 Matsushita Electron Corp Color picture tube

Also Published As

Publication number Publication date
JP2001205346A (en) 2001-07-31
MY125780A (en) 2006-08-30
CN100361264C (en) 2008-01-09
KR100348572B1 (en) 2002-08-10
KR100396059B1 (en) 2003-08-27
CN1113710C (en) 2003-07-09
US6705145B1 (en) 2004-03-16
EP1101546B1 (en) 2005-11-09
EP1102300A2 (en) 2001-05-23
KR20010051808A (en) 2001-06-25
EP1101546A3 (en) 2002-10-16
JP3971891B2 (en) 2007-09-05
DE60023820D1 (en) 2005-12-15
DE60023820T2 (en) 2006-08-10
EP1101546A2 (en) 2001-05-23
US6552480B1 (en) 2003-04-22
JP2001210249A (en) 2001-08-03
CN1299148A (en) 2001-06-13
CN1299716A (en) 2001-06-20
KR20010060351A (en) 2001-07-06
MXPA00011373A (en) 2004-08-11

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